CN101970253B - Suspension thrust bearing device and strut - Google Patents

Suspension thrust bearing device and strut Download PDF

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Publication number
CN101970253B
CN101970253B CN2009801063414A CN200980106341A CN101970253B CN 101970253 B CN101970253 B CN 101970253B CN 2009801063414 A CN2009801063414 A CN 2009801063414A CN 200980106341 A CN200980106341 A CN 200980106341A CN 101970253 B CN101970253 B CN 101970253B
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axial
insert
bearing
antifriction
flexible material
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CN101970253A (en
Inventor
塞缪尔·维奥尔特
克里斯托夫·豪戴耶
布鲁诺·蒙特伯厄夫
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SKF AB
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SKF AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/761—Sealings of ball or roller bearings specifically for bearings with purely axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/128—Damper mount on vehicle body or chassis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Support Of The Bearing (AREA)

Abstract

The suspension thrust bearing device comprises a rolling bearing 44 forming an axial stop and a support element 42 for the rolling bearing forming bearing means for a spring, the rolling bearing comprising a bottom ring 48 in contact with the support element, a top ring 46 and a plurality of rolling elements 50 positioned between the rings. The support element 42 comprises a body 60 and a stiffening insert 66 at least partly covered by the body. The body is formed of a rigid material 62 for the transmission of axial forces between the spring and the rolling bearing and a flexible material 64 to provide at least one dynamic seal 84b, 86b inside the device. At least a part of the rigid material is situated radially between the flexible material and the stiffening insert.

Description

Suspension type axial rolling bearing and support
Technical field
The present invention relates to be used in especially the suspension type axial rolling bearing field of the steered wheel (wheel flutter) on the power actuated vehicle.
More particularly, the suspension type thrust bearing that the present invention relates to comprises top ring and bottom part ring, and rolling element for example spheroid or roller is positioned between top ring and the bottom part ring.The top ring generally is installed as with bottom part ring and contacts bottom and top-supported or strut member, for example lid or cup.The housing of the ring of top and bottom cup formation antifriction-bearing box also provides the interface between said ring and the adjacent elements.
Background technology
The suspension type thrust bearing is positioned in the top section of car body and the suspension between the suspension type spring of vehicle.Spring is engaged in around the dashpot piston bar, and its terminal elastomer block through the filtration vibration links to each other with the car body of vehicle.The suspension type spring axially directly or indirectly is bearing on the bottom cup.The top cup is fixed with respect to the car body of vehicle.
The suspension type thrust bearing makes it possible between the car body of suspension type spring and vehicle, transmit axial force, allows bottom cup simultaneously and filters rotatablely moving between the elastomer block.This angular motion comes from the deflection angle and/or the suspension type compression of spring of the steered wheel of vehicle.
Know a kind of suspension type thrust bearing from document EP-B1-1445129, it is provided with the bottom support lid and is installed as the antifriction-bearing box that bears against the bottom support lid.Supporting cover is to be processed and comprised the axial centering surface that is used for the suspension type spring by synthetic material, and this suspension type spring prolongs through radial surface on its top, and what this radial surface was formed for said spring end only stops part.
In the embodiment shown in Fig. 2 and 4, the center support cup is positioned between suspension type spring and the supporting lid so that the well distributed of the load that obtains to be applied by spring and reduce the danger that supporting cover breaks in fact.
In operation, the center support cup receives the spilling of water, this means to use corrosion prevention surface treatment, for example cataphoretic treatment.But these processing are relatively costly, and their enforcement is a kind of pollution factor.
In order to overcome this shortcoming, patent application FR-A1-2857906 suggestion is strengthened insert at the inner metal that embeds of bottom support lid.Like this, use extra, the supporting cup of separating is able to avoid.
But the suspension type thrust bearing existence of the document only is provided with single narrow passage so that the defective of bearing felt to be provided between the bottom support lid of top cover and back-up roller dynamic bearing.
Like this, under some situation, when for example on vehicle is being paddled the road surface, going, perhaps even when cleaning vehicle with water blast gun, water can penetrate in the antifriction-bearing box, and the result diminishes the life-span of antifriction-bearing box.
Summary of the invention
The present invention is devoted to solve this defective.
More particularly, the present invention is devoted to provide a kind of firm suspension type thrust bearing, and it can support high relatively axial force, and makes it can reduce any invasion of water or other pollutants.
Therefore, the purpose of this invention is to provide a kind of special always failure-free suspension type thrust bearing.
The present invention relates to so a kind of suspension type axial rolling bearing; It comprises the antifriction-bearing box that forms axial thrust bearing and the supporting member that is used for spring is formed the antifriction-bearing box of bearing set, and this antifriction-bearing box comprises bottom part ring, the top ring that contact with supporting member and is positioned at bottom part ring and a plurality of rolling elements of top between encircling.Supporting member comprises main body and the reinforcement insert that is covered by main body at least in part.Main body is made up of the flexible material that is used to transmit the rigid material of the axial force between spring and the antifriction-bearing box and be used at least one dynamic sealing of generator in-to-in.At least a portion of rigid material is radially positioned in flexible material and strengthens between the insert.
Term " dynamic sealing " is appreciated that the sealing member between two parts of spindle bearing apparatus at this, and one of said two parts have relative motion with respect to another.
In one embodiment, this device comprises the top-supported lid that encircles direct contact with the top of antifriction-bearing box.Dynamic sealing can comprise at least one the outside lip spare with top-supported lid wipe contact.Dynamic sealing also can comprise at least one the inner lip spare that encircles wipe contact with the top of top-supported lid or antifriction-bearing box.
Term " outside lip spare " is to be understood that at this term " inner lip spare " is to be understood that to referring to towards the inner lip spare that extends of said bearing in order to refer to the lip spare towards bearing exterior orientation.
In one embodiment, said rigid material direct contact is strengthened insert.But said flexible material also direct contact is strengthened insert.Strengthen insert and can be embedded in body interior at least in part.
Advantageously, said flexible material Overmolded at least in part (overmould) is on the rigid material and/or be overmolded onto at least in part and strengthen on the insert.
In one embodiment, strengthen insert and comprise the device that can allow Overmolded flexible material to pass through said insert.
Strengthen insert and can comprise radial component and at least one axial component.
The invention still further relates to so a kind of suspension type axial rolling bearing, its be provided with form axial thrust bearing and comprise bottom part ring, top ring and be positioned at a plurality of rolling elements between said two rings antifriction-bearing box, be formed for to spring form bearing set antifriction-bearing box bottom part ring supporting member and with the supporting lid of the top loop contacts of antifriction-bearing box.Supporting member comprises main body and the reinforcement insert that is covered by main body at least in part.This main body by the rigid material of the transmission that is used for the axial force between spring and the antifriction-bearing box and the flexible material that is used to provide support the internal dynamic seal part between the top ring of external dynamic seal and supporting member and supporting lid or antifriction-bearing box between the bottom part ring of element and supporting lid or antifriction-bearing box form.
The invention still further relates to a kind of support, it comprises damper and as the suspension type axial rolling bearing of preceding qualification.
Description of drawings
The present invention will provide and the detailed description of embodiment illustrated in the accompanying drawings is able to better understanding through reading by the indefiniteness example, in the accompanying drawings:
Fig. 1 is the axial cross-sectional view according to the suspension type axial rolling bearing in the support that is installed in power actuated vehicle of first embodiment of the invention;
Fig. 2 and 3 is the different detailed views of cutting the plane open through Fig. 1;
Fig. 4 is the transparent view of reinforcement insert of the device of Fig. 1;
Fig. 5 is the transparent view of the suspension type axial rolling bearing of Fig. 1; And
Fig. 6 is the section axial viewgraph of cross-section according to the suspension type axial rolling bearing of second embodiment of the invention.
The specific embodiment
Like what can find out, represent with Reference numeral 10 generally and the support that is provided with damper 12 comprises bar 14 with axis 16, spring 18, the filtration elastomer block 22 between the suspension type thrust bearing 20 that cooperates around bar 14 and the car body (not shown) that support 10 wherein is installed that is positioned at bearing 20 and power actuated vehicle from Fig. 1.
Damper 12 also comprises the damping cylinder 24 shown in the part.The bar 14 of damper has the axial external surface 14b of large diameter axial external surface 14a, minor diameter, and said two surfaces are divided through shoulder 14c radially and opened.Damper 12 also comprises the plate 26 of installing and bear against shoulder 14c around the axial external surface 14b of minor diameter.The damping ring 28 of general toroidal form is fixed to plate 26 by rights.For example, the damping ring of being processed by rubber or elastic body 28 is orientated as around large diameter axial external surface 14a.Protection pieces 30 is attached to plate 26 to center on and to protect each element of formation damper 12.
Support 10 also comprises the axially spaced-apart spare 32 and elastomer block 22 around the axial surface 14b radial location of the minor diameter of bar 14 and axially mounting against plate 26.Nut 34 also is set partly to cooperate so that elastomer block 22 fastening against the fastening and said elastomer block 22 of distance piece 32 against suspension type thrust bearing 20 to be provided with the respective threads of the axial surface 14b of bar 14.
Elastomer block 22 can by flexible material for example elastic body process, can randomly insert the one or more rigid insert that for example are made of metal therein.In shown embodiment, two inserts 36,38 of general toroidal form are arranged on elastomer block 22 inside.Large diameter insert 36 is embedded in the elastomer block 22 fully.The insert 38 of minor diameter is partly embedded in said inside, and radial component bears against distance piece 32.
As in Fig. 2-5, more being clearly shown that, suspension type thrust bearing 20 mainly comprises the top-supported lid 40 that contacts with elastomer block 22, spring 18 is formed the bottom support lid 42 and the antifriction-bearing box 44 of axial location between said two lids of bearing sets.
Top-supported lid 40 can be formed by single, this single by plastic material for example polyamide PA6.6 process, have or do not have fibrous glass to strengthen.Supporting cover 40 comprise the top radial surface 40a that contacts with the annular rib 22a of elastomer block 22, from the axial surface 40b of smaller diameter distal on the axial component 22b that extends below and be centered in elastomer block 22 of radial surface 40a.Axial component 22b towards inside with respect to annular rib 22a radial offset.Top-supported lid 40 also comprises the axial skirt of the inner annular shape spare 40c of the little thickness in the axially downward extendible portion that roughly is positioned at axial surface 40b.
Top-supported lid 40 also comprises little thickness and the axial skirt of large diameter outer annular shape spare 40d; This skirt shape spare is connected to top radial surface 40a via the plane surface that cuts on the top that prolongs said skirt shape spare towards inside; This section plane surface is from being prolonged by radial surface towards inside in the minor diameter place; Axial surface upwards extends axially through this radial surface, and this axial surface is from prolonging through radial surface towards inside in top end.Can be that circumferential sensing in-to-in radial projection 40e continuous or that be interrupted is arranged on external shaft on the internal edge of skirt shape spare 40d, near its bottom end.Radial projection 40e is in this case for circumferential that be interrupted and form and be evenly distributed hook 40e.Hook 40e towards inner, towards bottom support cover 42 radial fingers to.
Antifriction-bearing box 44 comprises the bottom part ring processed by steel plate 48 and top ring 46, between them, accommodate row's rolling element 50, and rolling element is spherical formula in this situation.Also provide retainer 52 to keep the uniform circle spacing between the rolling element 50.Rolling element 50 is positioned between the rolling raceway that is formed by top ring 46 and bottom part ring 48.Advantageously, said ring can be obtained by same steel plate through cutting and punching press, and this is because the outer dia of top ring 46 equals the inside diameter of bottom part ring 48 in fact.
Top ring 46 has with supporting and covers the annular section 46a that 40 complementary surface 40f contacts; Said annular section 46a prolongs through the annular section 46b that extends near the opposite concavity the 40g of annular radial surface towards inside, said annular radial surface 40g be circumferential continuously or be interrupted and be connected to surperficial 40f and inner shaft to skirt shape spare 40c.The outside face of annular section 46a is formed for the raceway of rolling element 50.
Bottom part ring 48 has annular section 48a equally, and concave inner surface is formed for the raceway of rolling element 50 under it, this rolling element contact abuts against bottom supporting cover 42.Annular section 48b through opposite concavity prolongs annular section 48a towards the outside.Retainer 52 axial location are between annular section 46b and annular section 48a.
Bottom support lid 42 mainly comprises the main body 60 that formed by rigid material 62 and flexible material 64 and the reinforcement insert 66 of said main body, so that it can obtain the good communication of the axial and diametral load between gratifying rigidity and spring 18 and the antifriction-bearing box 44.
The rigid material 62 of main body 60 can be for example by plastic material for example polyamide PA 6.6 process, have or do not have fibrous glass to strengthen.Rigid material 62 comprises the cylinder axial external surface 62a of little axial dimension, and annular radial surface 62b is from the bottom extension of cylinder axial external surface 62a, and this annular radial surface 62b is towards inside and pass through circular surfaces downwards then through axial surface 62c prolongation.Axial surface 62c makes it possible to centering spring 18, and radial surface 62b is provided for the area supported of said spring.
From the bottom of axial surface 62c, radial ringed surperficial 62d extends towards inside, upwards prolongs through axial surface 62e from the edge of minor diameter is axial, covers 42 hole thereby form bottom support.
From the top of axial external surface 62a, the rigid material 62 of main body 60 comprises equally towards supporting and covers 40 axially extended first and second axial annular rib 62f, 62g.The top of the large diameter first flank 62f is with respect to the downward axial retraction in the top of the second flank 62g.Flank 62g radially centers on the annular section 48b of bottom part ring 48.The top of flank 62g prolongs through surperficial 62h towards inside, this surface 62h contact with the annular section 48a of bottom part ring 48 and with said part 48a complementary type.Annular surface 62h prolongs through cutting plane surface towards inside; Extend axial surface 62i from said section plane surface; This axial surface 62i prolongs through annular radial surface 62j towards inside in bottom radially, and this annular radial surface 62j is connected to axial surface 62e through circular surfaces.
The reinforcement insert 66 of general toroidal form has the roughly straight section of L shaped formula.It comprises axial component 66a, and this axial component 66a prolongs from the top through circular portion 66b towards the outside, extends radial component 66c from this circular portion 66b towards outer radial.Strengthening insert 66 can for example obtain to guarantee enough rigidity from thick relatively steel plate through cutting and punching press.
Axial component 66a and circular portion 66b are embedded into rigid material 62 inside of main body 60 fully.Axial component 66a near the zone the radial ringed surperficial 62d and and the zone of radial surface 62b level between extend axially.Radial component 66c and the zone of the annular section 46b level of top ring 46 and and the zone of the annular region 48b level of bottom part ring 48 between radially extend.Like this, strengthen insert 66 make bottom support lid 42 can transmit by spring 18 apply axially and diametral load to antifriction-bearing box 44.
Strengthen insert 66 and comprise a plurality of eyelets 68 that run through on the radial component 66c that next-door neighbour's circular portion 66b is set.Eyelet 68 has 10 at this, at the circumferencial direction rectangular distribution.Strengthen insert 66 and also comprise a plurality of otch 70 that provide from the free edge of radial component 66c.Otch 70 has roughly to descend female type and orientate as makes each eyelet 68 and otch 70 radially aligneds.Therefore each otch 70 is positioned at a radial surface identical with one of eyelet 68.
In this embodiment, the rigid material 62 of main body 60 is overmolded onto to be strengthened on the insert 66, and these two elements are engaged with each other like this.When Overmolded rigid material 62; Axial passage 72 and 74 (Fig. 3) is provided; The passage 72 of first series is through strengthening the eyelet 68 of insert 66, and second series passage 74 is through otch 70, so that inner axial passage 72 is positioned at a radial surface identical with external channel 74. Axial passage 72 and 74 is arranged so that rigid material 62 can cover the hole and the edge that defines each otch 70 of each eyelet 68.Each inner passage 72 is connected to relevant external channel 74 through radial passage 76, and said radial passage 76 openings come out or opening, is arranged on the radial component 66c below of strengthening insert 66.As a kind of variant, rigid material 62 can be overmolded onto on the insert not cover the inside of eyelet 68.
The flexible material 64 of main body 60 is overmolded onto then to be strengthened on insert 66 and the rigid material 62 to form inner seal 78 and outer seal 80.Flexible material 64 can be formed by elastic body, is for example formed by the neoprene such as polyurethane.
Because axially through the passage 72 strengthening insert 66 and be connected with each other through radial passage 76 and 74 existence; Flexible material 64 can be Overmolded through a spot of injection point, and the flexible material of fusion is distributed in the mfg. moulding die to form sealing member 78,80 then.The structure of mfg. moulding die is able to simplify like this.
In other words; Eyelet 68 forms with the otch of strengthening insert 66 70 has bifunctional passage; Just when making supporting cover 42, allow the transmission and the circulation of the flexible material 64 between two apparent surfaces at insert 66, and the actv. key that on said insert, is provided for flexible material 64.Two kinds of different materials of main body 60 Overmolded so carry out with two steps in order, it can be carried out through different technologies, for example through simple Overmolded or even carry out through double injection.
Through by two kinds of different materials production main bodys 60, can obtain to provide effectively the bottom support lid 42 of different mechanical functions.Obviously, should be appreciated that can also be through the manufacture of materials main body 60 of greater number.
Inner seal 78 comprises a plurality of axial inner posts 81, is 10 in this case, and it is formed on passage 72 inside of rigid material 62.Each is inner 81 from being positioned at the at that near the radial surface 62b zone extends axially relative radial surface 62j.Therefore each post 81 axially passes through to strengthen insert 66, thereby is radially centered on by rigid material 62.In other words, in the at of each eyelet 68 of strengthening insert 66, a part of rigid material 62 is radially positioned in a part of flexible material 64 and strengthens between the radial component 66c of insert 66.
Sealing member 78 is provided with the ring-shaped inner part that covers radial surface 62j and the annular protrusion 84a that links to each other with all posts 81 and extend the relative thin of projection from salient 84a towards inside equally and seals lip spare 84b.The inner shaft of sealing lip spare 84b and top-supported lid 40 is to the outside face wipe contact of skirt shape spare 40c.Its downwarping.
Outer seal 80 also comprises ten outside axial columns 83 of passage 74 in-to-ins that are formed on rigid material 62.Each outside column 83 extends axially flank 62f top near the zone that is positioned at the radial surface 62b.Each post 83 axially passes through to strengthen insert 66, thereby is radially centered on by rigid material 62.Like this, the at the edge that defines each otch 70 of strengthening insert 66, a part of rigid material 62 is radially positioned in a part of flexible material 64 and strengthens between the radial component 66c of insert 66.
Sealing member 80 is provided with the annular protrusion 86a of the exterior side surfaces of the top that covers flank 62f and flank 62g equally, and is connected to all posts 83.Sealing member 80 also comprises the outer annular sealing lip spare 86b to the relative thin of outer process from salient 86a.Sealing lip spare 86b is against the hole wipe contact of the outside skirt shape spare 40d of top-supported lid 40.Its downwarping.The post 81,83 that is arranged in same sagittal plane links together through the radially connecting strap 82 that is formed by one of radial passage 76.Each bar 82 direct contact comes out and radial surface 62b level against radial component 66c and the opening of strengthening insert 66.Strengthening insert 66 is covered by rigid material 62 and flexible material 64 fully.In other words, strengthen insert 66 and be embedded in main body 60 inside fully.
Inner seal 78 realizes the static sealing function with outer seal 80 through bottom support lid 42, realizes the dynamic seal (packing) function through top-supported lid 40.In this embodiment, inner sealing lip spare 84b covers 40 skirt shape spare 40 with supporting and cooperates.As a kind of variant, it is also conceivable that the external rings that provides with antifriction-bearing box 44 cooperates, for example with annular section 46b level.
The downwarping of inner sealing lip spare 84b and outside seal lip spare 86b is particularly advantageous, because it increases the ability that they resist any spilling of water or other pollutants.Therefore lip spare 84b, 86b form special actv. deflector.And through such spilling, the contact pressure between lip spare and the top-supported lid 40 increases, and this further increases the validity of said lip spare.
And sealing lip spare 86b has another function: before running in bearings, axially keep top-supported lid 40.For this reason; Sealing lip spare 86b has the outer dia greater than place, the end place diameter of hook 40e, and if it be positioned at the hook top so that supporting cover 42 covers 40 and begins to separate and can directly interfere with said hook with supporting before bearing is installed in its assembly that is intended to be mounted.Sealing lip spare 86b is therefore also with acting on the axial retention of top-supported lid 40 with respect to bottom support lid 42.
And the downward orientation of sealing lip spare 86b helps its distortion when detail assembly, provides enough axial maintenances to the assembly of in good time structure to have unexpected decompose carrying of risk ground and transportation simultaneously.
In embodiment as shown in Figure 6; Wherein similar components is endowed identical accompanying drawing mark; Strengthen the circular portion 66d that insert 66 also comprises the major diameter edge that upwards prolongs radial component 66c; Said radial component 66c self is through the axial component 66e axially-extending that makes progress, this axial component 66e extend axially bottom part ring 48 annular section 48b near.In this embodiment, axial component 66a has littler axial dimension.
Rigid material 62 is overmolded onto in this situation to be strengthened on the insert 66 so that the adjacent part of the top surface of the top surface of circular portion 66b and radial component 66c is not molded.Most of axial external surface of axial component 66e is not capped yet.The remainder of strengthening insert 66 is embedded in the rigid material 62.In other words, insert 66 is partly embedded in rigid material 62 inside.
In this embodiment, bottom support lid 42 comprises inner seal 90 and outer seal 92, and said two sealing members directly cover the free part of strengthening insert 66 through rigid material 62.Said two sealing members can be processed by elastic body, are for example processed by the neoprene such as polyurethane.
Ring-shaped inner part sealing member 90 is overmolded onto on the circular portion 66b and on a part of radial component 66c, and is overmolded onto on the part of adjacent rigid material 62.Inner seal 90 comprise contact with the axial surface 62i of the radial component 66c of insert and rigid material 62 against ring shaped axial part 90a.Therefore part rigid material 62 is radially positioned in axial component 90a and strengthens between the axial component 66e of insert 66.
From axial component 90a, derive dynamic seal (packing) lip spare 90c and static sealing lip spare 90b.Ring seal lip spare 90c radially extend with towards inner projection and through orientation a little downwards and wipe contact against the inner shaft of top-supported lid 40 outside face to skirt shape spare 40c.The circular portion 66b that sealing lip spare 90b covers reinforcement insert 66 fully is upwards to prolong the axial surface 62e of rigid material 62.
Annular, outer sealing member 92 comprises the axial external surface that covers the 66e of axial component freely that strengthens insert 66, and inner axial surface is most of to be covered by rigid material 62.Axial component 92a prolongs through the free-ended radial component 92b that covers axial component 66e on its top; Radial component 92b self prolongs through short axial ledge 92c, and said flange 92c is to extending below and contact against the top of the inside axial surface of axial component 66e and the top of flank 62g.Flange 92c is radially positioned in the annular section 48b of bottom part ring 48 and strengthens between the axial component 66e of insert 66.Strengthening insert 66 therefore is embedded in rigid material 62 and the sealing member 90,92 fully.
Outer seal 92 also comprises the also annular lip spare 92d of downward-sloping relative thin of outward radial projection.Lip spare 92d through being positioned at hook 40e top wipe contact against the hole of external shaft to skirt shape spare 40d.Inner seal 90 realizes static sealing with outer seal 92 through bottom support lid 42, realizes dynamic seal (packing) through top-supported lid 40.
In this embodiment, the zone of the reinforcement insert 66 that is not covered by rigid material 62 is used for direct Overmolded flexible seals 90,92 at said insert, thereby through said rigid material formation main body 60.The result is, these sealing members are fixed, and the zone that possibly contact with water or other pollutants spilling of strengthening insert is simultaneously covered fully, and this has limited the danger that the insert that can be formed by untreated steel plate lateral margin is corroded.Like this, itself be exactly that the relatively costly corrosion prevention surface-treated demand of having of pollution factor is able to avoid.
Owing to the present invention, can effectively transmit the bottom support lid of the power that the suspension type spring applies with economic especially method production, this bottom support lid is insensitive to corroding, and the excellent sealing to bearing is provided.Like this, the life-span of suspension type thrust bearing is able to prolong, and the risk of the running that noise is arranged that causes owing to the internal corrosion of antifriction-bearing box is minimized.

Claims (11)

1. suspension type axial rolling bearing; Comprise the antifriction-bearing box (44) that forms axial thrust bearing and be used for supporting member (42) the antifriction-bearing box of spring formation bearing set; Said antifriction-bearing box comprise the bottom part ring (48) that contacts with said supporting member, top ring (46) and be positioned at said bottom part ring and the top ring between a plurality of rolling elements (50); Said supporting member (42) comprises main body (60) and the reinforcement insert (66) that is covered by this main body at least in part; It is characterized in that said main body is by the rigid material (62) that is used for the axial force transmission between said spring and the said antifriction-bearing box with in order to be provided at said at least one dynamic sealing of device in-to-in (84b, 86b; 90c, 92d) flexible material form, at least a portion of said rigid material is radially positioned between said flexible material and the said reinforcement insert.
2. device as claimed in claim 1 comprises that the top-supported of the said top ring of the said antifriction-bearing box of direct contact is covered (40), and said dynamic sealing comprises at least one the outside lip spare (86b with said top-supported lid wipe contact; 92d).
3. device as claimed in claim 2, wherein, said dynamic sealing comprises at least one the inner lip spare (84b with said top-supported lid wipe contact; 90c).
4. as the described device of aforementioned arbitrary claim, wherein, said rigid material (62) and said reinforcement insert (66) direct contact.
5. device as claimed in claim 1, wherein, said flexible material (64) and said reinforcement insert (66) direct contact.
6. device as claimed in claim 1, wherein, said reinforcement insert (66) is partly embedded in said body interior at least.
7. device as claimed in claim 1, wherein, said flexible material (64) is overmolded onto on the said rigid material at least in part.
8. device as claimed in claim 1, wherein, said flexible material (64) is overmolded onto on the said reinforcement insert (66) at least in part.
9. device as claimed in claim 8, wherein, said reinforcement insert (66) comprises can allow the device (68,70) of Overmolded flexible material through said insert.
10. device as claimed in claim 1, wherein, said reinforcement insert (66) comprises radial component and at least one axial component (66a, 66e).
11. a support comprises damper (12) and as the described suspension type axial rolling bearing of aforementioned arbitrary claim.
CN2009801063414A 2008-02-28 2009-02-18 Suspension thrust bearing device and strut Active CN101970253B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0851303A FR2928187B1 (en) 2008-02-28 2008-02-28 SUSPENSION STOPPER DEVICE AND FORCE LEG
FR0851303 2008-02-28
PCT/EP2009/051936 WO2009106469A1 (en) 2008-02-28 2009-02-18 Suspension thrust bearing device and strut

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CN101970253A CN101970253A (en) 2011-02-09
CN101970253B true CN101970253B (en) 2012-11-14

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DE (1) DE112009000466B4 (en)
FR (1) FR2928187B1 (en)
WO (1) WO2009106469A1 (en)

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DE112009000466T5 (en) 2011-02-17
US8496235B2 (en) 2013-07-30
DE112009000466B4 (en) 2020-01-16
WO2009106469A1 (en) 2009-09-03
CN101970253A (en) 2011-02-09
FR2928187B1 (en) 2010-04-02
US20110101584A1 (en) 2011-05-05
FR2928187A1 (en) 2009-09-04

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